SKU: 63165283711

Cisco 1000Base-BX-20U SFP (mini-GBIC) Transceiver

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Description

Cisco 1000Base-BX-20U SFP (mini-GBIC) TransceiverThe Cisco 1000Base BX 20U SFP (mini GBIC) Transceiver is a compact, plug and play fiber optic module designed to seamlessly extend your networks reach on Cisco Small Business and Cisco Small Business Pro Series switches. Built for reliability and ease of use, this single mode, wavelength division multiplexing (WDM) capable SFP enables fast, dependable 1 Gbps Ethernet over long distances with minimal cable clutter. Whether upgrading an existing link,

The Cisco 1000Base-BX-20U SFP (mini-GBIC) Transceiver is a compact, plug-and-play fiber optic module designed to seamlessly extend your network’s reach on Cisco Small Business and Cisco Small Business Pro Series switches. Built for reliability and ease of use, this single-mode, wavelength-division multiplexing (WDM) capable SFP enables fast, dependable 1 Gbps Ethernet over long distances with minimal cable clutter. Whether upgrading an existing link, adding a redundant uplink, or creating a new fiber backbone for a branch or campus, the BX-20U transceiver provides a cost-effective, high-performance solution that aligns with Cisco networking best practices.

  • Effortless Cisco integration: Designed to slot directly into Cisco Small Business and Cisco Small Business Pro Series switches, this SFP transceiver delivers a seamless upgrade path to fiber connectivity. Its standards-based design ensures compatibility across a broad range of Cisco devices, enabling you to extend your existing investments without complex reconfiguration.

  • Long-distance fiber connectivity: The BX-20U variant supports up to 20 kilometers on single-mode fiber, enabling reliable uplinks between distant buildings or data centers. By leveraging a bi-directional WDM approach on a single fiber strand, it reduces fiber cabling costs while maintaining robust, high-performance links for latency-sensitive applications like voice, video, and data replication.

  • Premium single-mode fiber performance: Optimized for single-mode 9/125 µm fiber, the transceiver uses dedicated TX and RX wavelengths to deliver a clean, low-noise 1 Gbps link. This design minimizes dispersion and attenuation over long runs, helping preserve throughput and reduce error rates in busy networks.

  • Compact, heat-managed form factor: As a true mini-GBIC SFP module, it occupies a standard SFP slot on compatible Cisco switches. Its compact footprint pairs with reliable thermal design to maintain consistent performance in typical office, data-center edge, or remote office environments.

  • Easy maintenance and deployment: The SFP module is hot-swappable on supported Cisco platforms, simplifying installation during maintenance windows. With LC connectors and standard SFP MSA compliance, you can confidently mix and match with other compatible transceivers and fiber patch cables across your network.

Technical Details of Cisco 1000Base-BX-20U SFP (mini-GBIC) Transceiver

  • Type: Small Form-factor Pluggable (SFP) transceiver / mini-GBIC module for 1000 Mbps Ethernet.

  • Standard: 1000BASE-BX20-U, compatible with Cisco Small Business and Cisco Small Business Pro Series switches (SFP port operation).

  • Fiber type: Single-mode fiber (SMF), 9/125 µm optical fiber recommended for optimal performance.

  • Wavelengths: Transmitter uses a 1310 nm channel; receiver monitors an opposing 1490–1550 nm window depending on exact BX revision and equipment pairing (bi-directional WDM over a single fiber strand).

  • Distance (typical): Up to 20 kilometers on appropriate SMF links, subject to fiber quality, connectors, and installation practices.

  • Data rate: 1 Gbps full-duplex Ethernet over fiber via the SFP interface.

  • Connector: LC duplex connectors for fiber patching.

  • Form factor: SFP / mini-GBIC, hot-swappable in compatible switches.

  • Power consumption: Typical power usage around 0.8 W, with a maximum near 1.0 W depending on operating conditions.

  • Operating temperature: Designed for commercial environments (commonly 0 to 70°C), with standard IEEE/multi-vendor compatibility expectations for Cisco devices.

  • Compliance: SFP MSA-compatible and Cisco-certified for use with supported Cisco Small Business platforms.

How to install Cisco 1000Base-BX-20U SFP (mini-GBIC) Transceiver

  • Prepare the installation: Verify that your Cisco switch supports SFP modules in the target port and review any manufacturer recommendations for fiber link budgets and link verification. Confirm you are using a single-mode fiber patch cord with LC connectors sized for the BX-20U transceiver pairing.

  • Power considerations: While many Cisco switches support hot-swapping of SFP modules, follow your organization’s maintenance policy. If required, power down the switch or the specific port per your standard procedures to minimize risk during installation.

  • Install the module: Hold the SFP by its sides and gently slide it into the SFP slot until it seats with a light, audible click. Do not force or twist the module, and avoid touching the optical contacts.

  • Connect the fiber: Attach the LC patch cord to the transceiver’s LC connectors. Ensure the TX/RX orientation is correct with the remote device (TX on one end to RX on the other). Route the fiber to minimize bends and protect against strain or impact.

  • Power up and verify: If applicable, restore power and use the switch’s management interface to verify link status and 1 Gbps operation. Look for a stable link light and confirm the correct port speed and duplex setting. In most Cisco environments, the transceiver is recognized automatically and requires no extra configuration for basic operation.

Frequently asked questions

  • Q: What does 1000Base-BX-20U mean for my network?

    A: It designates a 1000 Mbps SFP transceiver that uses a BX up-link configuration for long-reach single-mode fiber connections, with a 20 km operating range on suitable fiber, enabling scalable, high-performance links between distant network devices such as switches, routers, and data centers.

  • Q: Is this transceiver compatible with all Cisco switches?

    A: Compatibility depends on the switch model and its SFP port. This module is intended for Cisco Small Business and Cisco Small Business Pro Series switches that support 1000BASE-BX SFP transceivers. Always check Cisco's official compatibility matrix or device documentation to confirm support for your specific model.

  • Q: Do I need special fiber for BX-20U, or can I use standard SMF?

    A: You should use single-mode fiber (SMF) appropriate for the range and wavelengths of the BX-20U. The fiber type, connector quality, and installation practices influence performance and link budget.

  • Q: Can I use this transceiver for bi-directional communication over a single fiber?

    A: Yes. The BX series is designed to support bi-directional communication over a single fiber using WDM, which helps reduce cabling while delivering full 1 Gbps Ethernet connectivity in a bidirectional link.

  • Q: How do I verify that the installation is working correctly?

    A: After installation, verify that the link is up in the switch’s management interface, confirm the port speed at 1 Gbps, and check for acceptable error rates or any WARN/ERR messages. If available, use device logs or Cisco performance monitors to validate sustained throughput and link stability.

Shipping Notes
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SKU: 63165283711

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